A 2-D array is an “array or arrays”, with 2 index values:<\/p>\n
\r\nROOMS = 4\r\nCOMPUTERS = 5\r\n\r\n#create array\r\ncomputers = [ ["" for c in range(COMPUTERS)] for r in range(ROOMS)]\r\n...\r\n<\/pre>\nNested loops are used to go through each of the index values:<\/p>\n
\r\n...\r\n#populate array\r\nfor room in range(ROOMS):\r\n for computer in range(COMPUTERS):\r\n \r\n computerID = f"r{room}c{computer}"\r\n computers[room][computer] = computerID\r\n\r\nprint(computers)\r\n<\/pre>\nPrinting a raw 2-D array shows the “array of arrays” structure:<\/p>\n
[['r0c0', 'r0c1', 'r0c2', 'r0c3', 'r0c4'], ['r1c0', \n'r1c1', 'r1c2', 'r1c3', 'r1c4'], ['r2c0', 'r2c1', 'r2c2', \n'r2c3', 'r2c4'], ['r3c0', 'r3c1', 'r3c2', 'r3c3', 'r3c4']]\n<\/pre>\nThe printing of a 2-D array can be improved:<\/p>\n
\r\nfor room in range(ROOMS):\r\n for computer in range(COMPUTERS):\r\n print(computers[room][computer],' ',end='')\r\n print()\r\n<\/pre>\nr0c0 r0c1 r0c2 r0c3 r0c4 \nr1c0 r1c1 r1c2 r1c3 r1c4 \nr2c0 r2c1 r2c2 r2c3 r2c4 \nr3c0 r3c1 r3c2 r3c3 r3c4\n<\/pre>\n","protected":false},"excerpt":{"rendered":"A 2-D array is an “array or arrays”, with 2 index values: ROOMS = 4 COMPUTERS = 5 #create array computers = [ ["" for c in range(COMPUTERS)] for r in range(ROOMS)] … Nested loops are used to go through each of the index values: … #populate array for room in range(ROOMS): for computer in range(COMPUTERS): computerID = f"r{room}c{computer}" computers[room][computer] = computerID print(computers) Printing a raw 2-D array shows the<\/p>\n